U.S. Supreme Court Justice Sonia Sotomayor waves a University of California at Berkeley pennant after delivering a speech on the campus on Thursday, March 9, 2017, in Berkeley, Calif. (AP Photo/Ben Margot)

U.S. Supreme Court Justice Sonia Sotomayor, center, answers questions from the audience during a speech at the University of California at Berkeley on Thursday, March 9, 2017, in Berkeley, Calif. (AP Photo/Ben Margot)

University of Michigan President Mark Schlissel presents Supreme Court Justice Sonia Sotomayor, a Doctor of Laws degree, Monday, Jan. 30, 2017, during a ceremony at the university in Ann Arbor, Mich. (AP Photo/Carlos Osorio)

Supreme Court Justice Sonia Sotomayor gestures after receiving a Doctor of Laws degree from University of Michigan President Mark Schlissel, Monday, Jan. 30, 2017, during a ceremony at the university in Ann Arbor, Mich. (AP Photo/Carlos Osorio)

In this Nov. 17, 2015, file photo, U.S. Supreme Court Justice Sonia Sotomayor speaks during an event at the University of Richmond School of Law in Richmond, Va. (Mark Gormus/Richmond Times-Dispatch via AP)

FILE - This Sept. 19, 2013 file photo shows Supreme Court Justice Sonia Sotomayor speaking at the University of Delaware in Newark, Del. The Supreme Court on Tuesday upheld Michigan's ban on using race as a factor in college admissions. The justices said in a 6-2 ruling that Michigan voters had the right to change their state constitution to prohibit public colleges and universities from taking account of race in admissions decisions. The justices said that a lower federal court was wrong to set aside the change as discriminatory. In dissent, Sotomayor said the decision tramples on the rights of minorities, even though the amendment was adopted democratically. “But without checks, democratically approved legislation can oppress minority groups,” said Sotomayor, who read her dissent aloud in the courtroom Tuesday. (AP Photo/Patrick Semansky, File)

FILE - This Sept. 19, 2013 file photo shows Supreme Court Justice Sonia Sotomayor in Newark, Del. The First Amendment protects public employees from job retaliation when they are called to testify in court about official corruption, the Supreme Court ruled Thursday.The justices decided in favor of former Alabama community College official Edward Lane, with Sotomayor saying Lane's testimony was constitutionally protected because he was speaking as a citizen on a matter of public concern, even if it covered facts he learned at work. (AP Photo/Patrick Semansky, File)